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490 lines
32 KiB
C#
490 lines
32 KiB
C#
using FreeSql.Internal;
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using FreeSql.Internal.Model;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using System.Text;
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namespace FreeSql.SqlServer
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{
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class SqlServerCodeFirst : Internal.CommonProvider.CodeFirstProvider
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{
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public SqlServerCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
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static object _dicCsToDbLock = new object();
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static Dictionary<string, CsToDb<SqlDbType>> _dicCsToDb = new Dictionary<string, CsToDb<SqlDbType>>() {
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{ typeof(bool).FullName, CsToDb.New(SqlDbType.Bit, "bit","bit NOT NULL", null, false, false) },{ typeof(bool?).FullName, CsToDb.New(SqlDbType.Bit, "bit","bit", null, true, null) },
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{ typeof(sbyte).FullName, CsToDb.New(SqlDbType.SmallInt, "smallint", "smallint NOT NULL", false, false, 0) },{ typeof(sbyte?).FullName, CsToDb.New(SqlDbType.SmallInt, "smallint", "smallint", false, true, null) },
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{ typeof(short).FullName, CsToDb.New(SqlDbType.SmallInt, "smallint","smallint NOT NULL", false, false, 0) },{ typeof(short?).FullName, CsToDb.New(SqlDbType.SmallInt, "smallint", "smallint", false, true, null) },
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{ typeof(int).FullName, CsToDb.New(SqlDbType.Int, "int", "int NOT NULL", false, false, 0) },{ typeof(int?).FullName, CsToDb.New(SqlDbType.Int, "int", "int", false, true, null) },
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{ typeof(long).FullName, CsToDb.New(SqlDbType.BigInt, "bigint","bigint NOT NULL", false, false, 0) },{ typeof(long?).FullName, CsToDb.New(SqlDbType.BigInt, "bigint","bigint", false, true, null) },
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{ typeof(byte).FullName, CsToDb.New(SqlDbType.TinyInt, "tinyint","tinyint NOT NULL", true, false, 0) },{ typeof(byte?).FullName, CsToDb.New(SqlDbType.TinyInt, "tinyint","tinyint", true, true, null) },
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{ typeof(ushort).FullName, CsToDb.New(SqlDbType.Int, "int","int NOT NULL", true, false, 0) },{ typeof(ushort?).FullName, CsToDb.New(SqlDbType.Int, "int", "int", true, true, null) },
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{ typeof(uint).FullName, CsToDb.New(SqlDbType.BigInt, "bigint", "bigint NOT NULL", true, false, 0) },{ typeof(uint?).FullName, CsToDb.New(SqlDbType.BigInt, "bigint", "bigint", true, true, null) },
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{ typeof(ulong).FullName, CsToDb.New(SqlDbType.Decimal, "decimal", "decimal(20,0) NOT NULL", true, false, 0) },{ typeof(ulong?).FullName, CsToDb.New(SqlDbType.Decimal, "decimal", "decimal(20,0)", true, true, null) },
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{ typeof(double).FullName, CsToDb.New(SqlDbType.Float, "float", "float NOT NULL", false, false, 0) },{ typeof(double?).FullName, CsToDb.New(SqlDbType.Float, "float", "float", false, true, null) },
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{ typeof(float).FullName, CsToDb.New(SqlDbType.Real, "real","real NOT NULL", false, false, 0) },{ typeof(float?).FullName, CsToDb.New(SqlDbType.Real, "real","real", false, true, null) },
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{ typeof(decimal).FullName, CsToDb.New(SqlDbType.Decimal, "decimal", "decimal(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName, CsToDb.New(SqlDbType.Decimal, "decimal", "decimal(10,2)", false, true, null) },
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{ typeof(TimeSpan).FullName, CsToDb.New(SqlDbType.Time, "time","time NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName, CsToDb.New(SqlDbType.Time, "time", "time",false, true, null) },
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{ typeof(DateTime).FullName, CsToDb.New(SqlDbType.DateTime, "datetime", "datetime NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName, CsToDb.New(SqlDbType.DateTime, "datetime", "datetime", false, true, null) },
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{ typeof(DateTimeOffset).FullName, CsToDb.New(SqlDbType.DateTimeOffset, "datetimeoffset", "datetimeoffset NOT NULL", false, false, new DateTimeOffset(new DateTime(1970,1,1), TimeSpan.Zero)) },{ typeof(DateTimeOffset?).FullName, CsToDb.New(SqlDbType.DateTimeOffset, "datetimeoffset", "datetimeoffset", false, true, null) },
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{ typeof(byte[]).FullName, CsToDb.New(SqlDbType.VarBinary, "varbinary", "varbinary(255)", false, null, new byte[0]) },
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{ typeof(string).FullName, CsToDb.New(SqlDbType.NVarChar, "nvarchar", "nvarchar(255)", false, null, "") },
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{ typeof(Guid).FullName, CsToDb.New(SqlDbType.UniqueIdentifier, "uniqueidentifier", "uniqueidentifier NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName, CsToDb.New(SqlDbType.UniqueIdentifier, "uniqueidentifier", "uniqueidentifier", false, true, null) },
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};
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public override DbInfoResult GetDbInfo(Type type)
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{
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if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new DbInfoResult((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue);
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if (type.IsArray) return null;
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var enumType = type.IsEnum ? type : null;
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if (enumType == null && type.IsNullableType())
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{
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var genericTypes = type.GetGenericArguments();
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if (genericTypes.Length == 1 && genericTypes.First().IsEnum) enumType = genericTypes.First();
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}
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if (enumType != null)
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{
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var newItem = enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
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CsToDb.New(SqlDbType.BigInt, "bigint", $"bigint{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, enumType.CreateInstanceGetDefaultValue()) :
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CsToDb.New(SqlDbType.Int, "int", $"int{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, enumType.CreateInstanceGetDefaultValue());
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if (_dicCsToDb.ContainsKey(type.FullName) == false)
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{
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lock (_dicCsToDbLock)
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{
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if (_dicCsToDb.ContainsKey(type.FullName) == false)
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_dicCsToDb.Add(type.FullName, newItem);
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}
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}
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return new DbInfoResult((int)newItem.type, newItem.dbtype, newItem.dbtypeFull, newItem.isnullable, newItem.defaultValue);
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}
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return null;
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}
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void AddOrUpdateMS_Description(StringBuilder sb, string schema, string table, string comment)
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{
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if (string.IsNullOrEmpty(comment))
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{
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sb.AppendFormat(@"
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IF ((SELECT COUNT(1) from fn_listextendedproperty('MS_Description',
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'SCHEMA', N'{0}',
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'TABLE', N'{1}',
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NULL, NULL)) > 0)
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EXEC sp_dropextendedproperty @name = N'MS_Description'
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, @level0type = 'SCHEMA', @level0name = N'{0}'
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, @level1type = 'TABLE', @level1name = N'{1}'
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", schema.Replace("'", "''"), table.Replace("'", "''"));
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return;
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}
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sb.AppendFormat(@"
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IF ((SELECT COUNT(1) from fn_listextendedproperty('MS_Description',
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'SCHEMA', N'{0}',
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'TABLE', N'{1}',
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NULL, NULL)) > 0)
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EXEC sp_updateextendedproperty @name = N'MS_Description', @value = N'{2}'
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, @level0type = 'SCHEMA', @level0name = N'{0}'
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, @level1type = 'TABLE', @level1name = N'{1}'
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ELSE
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EXEC sp_addextendedproperty @name = N'MS_Description', @value = N'{2}'
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, @level0type = 'SCHEMA', @level0name = N'{0}'
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, @level1type = 'TABLE', @level1name = N'{1}'
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", schema.Replace("'", "''"), table.Replace("'", "''"), comment?.Replace("'", "''") ?? "");
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}
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void AddOrUpdateMS_Description(StringBuilder sb, string schema, string table, string column, string comment)
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{
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if (string.IsNullOrEmpty(comment))
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{
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sb.AppendFormat(@"
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IF ((SELECT COUNT(1) from fn_listextendedproperty('MS_Description',
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'SCHEMA', N'{0}',
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'TABLE', N'{1}',
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'COLUMN', N'{2}')) > 0)
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EXEC sp_dropextendedproperty @name = N'MS_Description'
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, @level0type = 'SCHEMA', @level0name = N'{0}'
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, @level1type = 'TABLE', @level1name = N'{1}'
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, @level2type = 'COLUMN', @level2name = N'{2}'
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", schema.Replace("'", "''"), table.Replace("'", "''"), column.Replace("'", "''"));
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return;
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}
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sb.AppendFormat(@"
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IF ((SELECT COUNT(1) from fn_listextendedproperty('MS_Description',
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'SCHEMA', N'{0}',
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'TABLE', N'{1}',
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'COLUMN', N'{2}')) > 0)
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EXEC sp_updateextendedproperty @name = N'MS_Description', @value = N'{3}'
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, @level0type = 'SCHEMA', @level0name = N'{0}'
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, @level1type = 'TABLE', @level1name = N'{1}'
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, @level2type = 'COLUMN', @level2name = N'{2}'
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ELSE
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EXEC sp_addextendedproperty @name = N'MS_Description', @value = N'{3}'
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, @level0type = 'SCHEMA', @level0name = N'{0}'
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, @level1type = 'TABLE', @level1name = N'{1}'
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, @level2type = 'COLUMN', @level2name = N'{2}'
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", schema.Replace("'", "''"), table.Replace("'", "''"), column.Replace("'", "''"), comment?.Replace("'", "''") ?? "");
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}
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protected override string GetComparisonDDLStatements(params TypeAndName[] objects)
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{
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var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5));
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string database = null;
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try
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{
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database = conn.Value.Database;
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Func<string, string, object> ExecuteScalar = (db, sql) =>
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{
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if (string.Compare(database, db) != 0) conn.Value.ChangeDatabase(db);
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try
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{
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using (var cmd = conn.Value.CreateCommand())
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{
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cmd.CommandText = sql;
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cmd.CommandType = CommandType.Text;
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return cmd.ExecuteScalar();
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}
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}
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finally
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{
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if (string.Compare(database, db) != 0) conn.Value.ChangeDatabase(database);
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}
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};
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var sb = new StringBuilder();
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foreach (var obj in objects)
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{
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if (sb.Length > 0) sb.Append("\r\n");
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var tb = _commonUtils.GetTableByEntity(obj.entityType);
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if (tb == null) throw new Exception($"类型 {obj.entityType.FullName} 不可迁移");
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if (tb.Columns.Any() == false) throw new Exception($"类型 {obj.entityType.FullName} 不可迁移，可迁移属性0个");
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var tbname = _commonUtils.SplitTableName(tb.DbName);
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if (tbname?.Length == 1) tbname = new[] { database, "dbo", tbname[0] };
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if (tbname?.Length == 2) tbname = new[] { database, tbname[0], tbname[1] };
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var tboldname = _commonUtils.SplitTableName(tb.DbOldName); //旧表名
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if (tboldname?.Length == 1) tboldname = new[] { database, "dbo", tboldname[0] };
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if (tboldname?.Length == 2) tboldname = new[] { database, tboldname[0], tboldname[1] };
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if (string.IsNullOrEmpty(obj.tableName) == false)
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{
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var tbtmpname = _commonUtils.SplitTableName(obj.tableName);
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if (tbtmpname?.Length == 1) tbtmpname = new[] { database, "dbo", tbtmpname[0] };
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if (tbtmpname?.Length == 2) tbtmpname = new[] { database, tbtmpname[0], tbtmpname[1] };
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if (tbname[0] != tbtmpname[0] || tbname[1] != tbtmpname[1] || tbname[2] != tbtmpname[2])
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{
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tbname = tbtmpname;
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tboldname = null;
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}
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}
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//codefirst 不支持表名、模式名、数据库名中带 .
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if (string.Compare(tbname[0], database, true) != 0 && ExecuteScalar(database, $" select 1 from sys.databases where name='{tbname[0]}'") == null) //创建数据库
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ExecuteScalar(database, $"if not exists(select 1 from sys.databases where name='{tbname[0]}')\r\n\tcreate database [{tbname[0]}];");
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if (string.Compare(tbname[1], "dbo", true) != 0 && ExecuteScalar(tbname[0], $" select 1 from sys.schemas where name='{tbname[1]}'") == null) //创建模式
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ExecuteScalar(tbname[0], $"create schema [{tbname[1]}] authorization [dbo]");
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var sbalter = new StringBuilder();
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var istmpatler = false; //创建临时表，导入数据，删除旧表，修改
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if (ExecuteScalar(tbname[0], $" select 1 from dbo.sysobjects where id = object_id(N'[{tbname[1]}].[{tbname[2]}]') and OBJECTPROPERTY(id, N'IsUserTable') = 1") == null)
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{ //表不存在
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if (tboldname != null)
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{
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if (string.Compare(tboldname[0], tbname[0], true) != 0 && ExecuteScalar(database, $" select 1 from sys.databases where name='{tboldname[0]}'") == null ||
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string.Compare(tboldname[1], tbname[1], true) != 0 && ExecuteScalar(tboldname[0], $" select 1 from sys.schemas where name='{tboldname[1]}'") == null ||
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ExecuteScalar(tboldname[0], $" select 1 from dbo.sysobjects where id = object_id(N'[{tboldname[1]}].[{tboldname[2]}]') and OBJECTPROPERTY(id, N'IsUserTable') = 1") == null)
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//数据库或模式或表不存在
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tboldname = null;
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}
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if (tboldname == null)
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{
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//创建表
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var createTableName = _commonUtils.QuoteSqlName($"{tbname[1]}.{tbname[2]}");
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sb.Append("use ").Append(_commonUtils.QuoteSqlName(tbname[0])).Append(";\r\nCREATE TABLE ").Append(createTableName).Append(" ( ");
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var pkidx = 0;
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foreach (var tbcol in tb.ColumnsByPosition)
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{
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sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
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if (tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" identity(1,1)");
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if (tbcol.Attribute.IsPrimary == true)
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{
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if (tb.Primarys.Length > 1)
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{
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if (pkidx == tb.Primarys.Length - 1)
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sb.Append(" primary key (").Append(string.Join(", ", tb.Primarys.Select(a => _commonUtils.QuoteSqlName(a.Attribute.Name)))).Append(")");
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}
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else
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sb.Append(" primary key");
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pkidx++;
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}
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sb.Append(",");
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}
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sb.Remove(sb.Length - 1, 1).Append("\r\n);\r\n");
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//创建表的索引
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foreach (var uk in tb.Indexes)
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{
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sb.Append("CREATE ");
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if (uk.IsUnique) sb.Append("UNIQUE ");
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sb.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(createTableName).Append("(");
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foreach (var tbcol in uk.Columns)
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{
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sb.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
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if (tbcol.IsDesc) sb.Append(" DESC");
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sb.Append(", ");
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}
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sb.Remove(sb.Length - 2, 2).Append(");\r\n");
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}
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//备注
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foreach (var tbcol in tb.ColumnsByPosition)
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{
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if (string.IsNullOrEmpty(tbcol.Comment) == false)
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AddOrUpdateMS_Description(sb, tbname[1], tbname[2], tbcol.Attribute.Name, tbcol.Comment);
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}
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if (string.IsNullOrEmpty(tb.Comment) == false)
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AddOrUpdateMS_Description(sb, tbname[1], tbname[2], tb.Comment);
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continue;
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}
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//如果新表，旧表在一个数据库和模式下，直接修改表名
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if (string.Compare(tbname[0], tboldname[0], true) == 0 &&
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string.Compare(tbname[1], tboldname[1], true) == 0)
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sbalter.Append("use ").Append(_commonUtils.QuoteSqlName(tbname[0])).Append(_commonUtils.FormatSql(";\r\nEXEC sp_rename {0}, {1};\r\n", _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}.{tboldname[2]}"), tbname[2]));
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else
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{
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//如果新表，旧表不在一起，创建新表，导入数据，删除旧表
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istmpatler = true;
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}
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}
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else
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tboldname = null; //如果新表已经存在，不走改表名逻辑
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//对比字段，只可以修改类型、增加字段、有限的修改字段名；保证安全不删除字段
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var sql = string.Format(@"
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use [{0}];
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select
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a.name 'Column'
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,b.name + case
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when b.name in ('Char', 'VarChar', 'NChar', 'NVarChar', 'Binary', 'VarBinary') then '(' +
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case when a.max_length = -1 then 'MAX'
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when b.name in ('NChar', 'NVarchar') then cast(a.max_length / 2 as varchar)
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else cast(a.max_length as varchar) end + ')'
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when b.name in ('Numeric', 'Decimal') then '(' + cast(a.precision as varchar) + ',' + cast(a.scale as varchar) + ')'
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else '' end as 'SqlType'
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,case when a.is_nullable = 1 then '1' else '0' end 'IsNullable'
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,case when a.is_identity = 1 then '1' else '0' end 'IsIdentity'
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,(select value from sys.extended_properties where major_id = a.object_id AND minor_id = a.column_id AND name = 'MS_Description') 'Comment'
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from sys.columns a
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inner join sys.types b on b.user_type_id = a.user_type_id
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left join sys.tables d on d.object_id = a.object_id
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left join sys.schemas e on e.schema_id = d.schema_id
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where a.object_id in (object_id(N'[{1}].[{2}]'));
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use [" + database + "];", tboldname ?? tbname);
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var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
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var tbstruct = ds.ToDictionary(a => string.Concat(a[0]), a => new
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{
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column = string.Concat(a[0]),
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sqlType = string.Concat(a[1]),
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is_nullable = string.Concat(a[2]) == "1",
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is_identity = string.Concat(a[3]) == "1",
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comment = string.Concat(a[4])
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}, StringComparer.CurrentCultureIgnoreCase);
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if (istmpatler == false)
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{
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foreach (var tbcol in tb.ColumnsByPosition)
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{
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if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
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string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
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{
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var isCommentChanged = tbstructcol.comment != (tbcol.Comment ?? "");
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if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false ||
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tbcol.Attribute.IsNullable != tbstructcol.is_nullable ||
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tbcol.Attribute.IsIdentity != tbstructcol.is_identity)
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{
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istmpatler = true;
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break;
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}
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if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0)
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//修改列名
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sbalter.Append(_commonUtils.FormatSql("EXEC sp_rename {0}, {1}, 'COLUMN';\r\n", $"{tbname[0]}.{tbname[1]}.{tbname[2]}.{tbstructcol.column}", tbcol.Attribute.Name));
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if (isCommentChanged)
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//修改备备注
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AddOrUpdateMS_Description(sbalter, tbname[1], tbname[2], tbcol.Attribute.Name, tbcol.Comment);
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continue;
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}
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//添加列
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbname[2]}")).Append(" ADD ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
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if (tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sbalter.Append(" identity(1,1)");
|
||
if (tbcol.Attribute.IsNullable == false && tbcol.DbDefaultValue != "NULL" && tbcol.Attribute.IsIdentity == false) sbalter.Append(" default(").Append(GetTransferDbDefaultValue(tbcol)).Append(")");
|
||
sbalter.Append(";\r\n");
|
||
if (string.IsNullOrEmpty(tbcol.Comment) == false) AddOrUpdateMS_Description(sbalter, tbname[1], tbname[2], tbcol.Attribute.Name, tbcol.Comment);
|
||
}
|
||
}
|
||
if (istmpatler == false)
|
||
{
|
||
var dsuksql = string.Format(@"
|
||
use [{0}];
|
||
select
|
||
c.name
|
||
,b.name
|
||
,case when a.is_descending_key = 1 then 1 else 0 end
|
||
,case when b.is_unique = 1 then 1 else 0 end
|
||
from sys.index_columns a
|
||
inner join sys.indexes b on b.object_id = a.object_id and b.index_id = a.index_id
|
||
left join sys.columns c on c.object_id = a.object_id and c.column_id = a.column_id
|
||
where a.object_id in (object_id(N'[{1}].[{2}]')) and b.is_primary_key = 0;
|
||
use [" + database + "];", tboldname ?? tbname);
|
||
var dsuk = _orm.Ado.ExecuteArray(CommandType.Text, dsuksql).Select(a => new[] { string.Concat(a[0]), string.Concat(a[1]), string.Concat(a[2]), string.Concat(a[3]) });
|
||
foreach (var uk in tb.Indexes)
|
||
{
|
||
if (string.IsNullOrEmpty(uk.Name) || uk.Columns.Any() == false) continue;
|
||
var dsukfind1 = dsuk.Where(a => string.Compare(a[1], uk.Name, true) == 0).ToArray();
|
||
if (dsukfind1.Any() == false || dsukfind1.Length != uk.Columns.Length || dsukfind1.Where(a => (a[3] == "1") == uk.IsUnique && uk.Columns.Where(b => string.Compare(b.Column.Attribute.Name, a[0], true) == 0 && (a[2] == "1") == b.IsDesc).Any()).Count() != uk.Columns.Length)
|
||
{
|
||
if (dsukfind1.Any()) sbalter.Append("DROP INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}.{tbname[2]}")).Append(";\r\n");
|
||
sbalter.Append("CREATE ");
|
||
if (uk.IsUnique) sbalter.Append("UNIQUE ");
|
||
sbalter.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}.{tbname[2]}")).Append("(");
|
||
foreach (var tbcol in uk.Columns)
|
||
{
|
||
sbalter.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
|
||
if (tbcol.IsDesc) sbalter.Append(" DESC");
|
||
sbalter.Append(", ");
|
||
}
|
||
sbalter.Remove(sbalter.Length - 2, 2).Append(");\r\n");
|
||
}
|
||
}
|
||
}
|
||
if (istmpatler == false)
|
||
{
|
||
var dbcomment = string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, $" SELECT value from fn_listextendedproperty('MS_Description', 'schema', N'{tbname[1].Replace("'", "''")}', 'table', N'{tbname[2].Replace("'", "''")}', NULL, NULL)"));
|
||
if (dbcomment != (tb.Comment ?? ""))
|
||
AddOrUpdateMS_Description(sb, tbname[1], tbname[2], tb.Comment);
|
||
|
||
if (sbalter.Length > 0)
|
||
sb.Append(sbalter).Append("\r\nuse " + database);
|
||
continue;
|
||
}
|
||
//创建临时表，数据导进临时表，然后删除原表，将临时表改名为原表名
|
||
bool idents = false;
|
||
var tablename = tboldname == null ? _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbname[2]}") : _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}.{tboldname[2]}");
|
||
var tmptablename = _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.FreeSqlTmp_{tbname[2]}");
|
||
sb.Append("BEGIN TRANSACTION\r\n")
|
||
.Append("SET QUOTED_IDENTIFIER ON\r\n")
|
||
.Append("SET ARITHABORT ON\r\n")
|
||
.Append("SET NUMERIC_ROUNDABORT OFF\r\n")
|
||
.Append("SET CONCAT_NULL_YIELDS_NULL ON\r\n")
|
||
.Append("SET ANSI_NULLS ON\r\n")
|
||
.Append("SET ANSI_PADDING ON\r\n")
|
||
.Append("SET ANSI_WARNINGS ON\r\n")
|
||
.Append("COMMIT\r\n");
|
||
sb.Append("BEGIN TRANSACTION;\r\n");
|
||
//创建临时表
|
||
sb.Append("CREATE TABLE ").Append(tmptablename).Append(" ( ");
|
||
var pkidx2 = 0;
|
||
foreach (var tbcol in tb.ColumnsByPosition)
|
||
{
|
||
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
|
||
if (tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" identity(1,1)");
|
||
if (tbcol.Attribute.IsPrimary == true)
|
||
{
|
||
if (tb.Primarys.Length > 1)
|
||
{
|
||
if (pkidx2 == tb.Primarys.Length - 1)
|
||
sb.Append(" primary key (").Append(string.Join(", ", tb.Primarys.Select(a => _commonUtils.QuoteSqlName(a.Attribute.Name)))).Append(")");
|
||
}
|
||
else
|
||
sb.Append(" primary key");
|
||
pkidx2++;
|
||
}
|
||
sb.Append(",");
|
||
idents = idents || tbcol.Attribute.IsIdentity == true;
|
||
}
|
||
sb.Remove(sb.Length - 1, 1).Append("\r\n);\r\n");
|
||
//备注
|
||
foreach (var tbcol in tb.ColumnsByPosition)
|
||
{
|
||
if (string.IsNullOrEmpty(tbcol.Comment) == false)
|
||
AddOrUpdateMS_Description(sb, tbname[1], $"FreeSqlTmp_{tbname[2]}", tbcol.Attribute.Name, tbcol.Comment);
|
||
}
|
||
if (string.IsNullOrEmpty(tb.Comment) == false)
|
||
AddOrUpdateMS_Description(sb, tbname[1], $"FreeSqlTmp_{tbname[2]}", tb.Comment);
|
||
|
||
if ((_commonUtils as SqlServerUtils).ServerVersion > 9) //SqlServer 2008+
|
||
sb.Append("ALTER TABLE ").Append(tmptablename).Append(" SET (LOCK_ESCALATION = TABLE);\r\n");
|
||
if (idents) sb.Append("SET IDENTITY_INSERT ").Append(tmptablename).Append(" ON;\r\n");
|
||
sb.Append("IF EXISTS(SELECT 1 FROM ").Append(tablename).Append(")\r\n");
|
||
sb.Append("\tEXEC('INSERT INTO ").Append(tmptablename).Append(" (");
|
||
foreach (var tbcol in tb.ColumnsByPosition)
|
||
sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
|
||
sb.Remove(sb.Length - 2, 2).Append(")\r\n\t\tSELECT ");
|
||
foreach (var tbcol in tb.ColumnsByPosition)
|
||
{
|
||
var insertvalue = "NULL";
|
||
if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
|
||
string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
|
||
{
|
||
insertvalue = _commonUtils.QuoteSqlName(tbstructcol.column);
|
||
if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false)
|
||
insertvalue = $"cast({insertvalue} as {tbcol.Attribute.DbType.Split(' ').First()})";
|
||
if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
|
||
insertvalue = $"isnull({insertvalue},{GetTransferDbDefaultValue(tbcol)})";
|
||
}
|
||
else if (tbcol.Attribute.IsNullable == false)
|
||
if (tbcol.DbDefaultValue != "NULL" && tbcol.Attribute.IsIdentity == false)
|
||
insertvalue = GetTransferDbDefaultValue(tbcol);
|
||
sb.Append(insertvalue.Replace("'", "''")).Append(", ");
|
||
}
|
||
sb.Remove(sb.Length - 2, 2).Append(" FROM ").Append(tablename).Append(" WITH (HOLDLOCK TABLOCKX)');\r\n");
|
||
if (idents) sb.Append("SET IDENTITY_INSERT ").Append(tmptablename).Append(" OFF;\r\n");
|
||
sb.Append("DROP TABLE ").Append(tablename).Append(";\r\n");
|
||
sb.Append("EXECUTE sp_rename N'").Append(tmptablename).Append("', N'").Append(tbname[2]).Append("', 'OBJECT';\r\n");
|
||
//创建表的索引
|
||
foreach (var uk in tb.Indexes)
|
||
{
|
||
sb.Append("CREATE ");
|
||
if (uk.IsUnique) sb.Append("UNIQUE ");
|
||
sb.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(tablename).Append("(");
|
||
foreach (var tbcol in uk.Columns)
|
||
{
|
||
sb.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
|
||
if (tbcol.IsDesc) sb.Append(" DESC");
|
||
sb.Append(", ");
|
||
}
|
||
sb.Remove(sb.Length - 2, 2).Append(");\r\n");
|
||
}
|
||
sb.Append("COMMIT;\r\n");
|
||
}
|
||
return sb.Length == 0 ? null : sb.ToString();
|
||
}
|
||
finally
|
||
{
|
||
try
|
||
{
|
||
if (string.IsNullOrEmpty(database) == false)
|
||
conn.Value.ChangeDatabase(database);
|
||
_orm.Ado.MasterPool.Return(conn);
|
||
}
|
||
catch
|
||
{
|
||
_orm.Ado.MasterPool.Return(conn, true);
|
||
}
|
||
}
|
||
}
|
||
string GetTransferDbDefaultValue(ColumnInfo col)
|
||
{
|
||
var ddv = col.DbDefaultValue;
|
||
if (string.IsNullOrEmpty(ddv) || ddv == "NULL") return ddv;
|
||
if (col.Attribute.MapType.NullableTypeOrThis() == typeof(DateTime) && DateTime.TryParse(ddv, out var trydt))
|
||
{
|
||
if (col.Attribute.DbType.Contains("SMALLDATETIME") && trydt < new DateTime(1900, 1, 1)) ddv = _commonUtils.FormatSql("{0}", new DateTime(1900, 1, 1));
|
||
else if (col.Attribute.DbType.Contains("DATETIME") && trydt < new DateTime(1753, 1, 1)) ddv = _commonUtils.FormatSql("{0}", new DateTime(1753, 1, 1));
|
||
else if (col.Attribute.DbType.Contains("DATE") && trydt < new DateTime(0001, 1, 1)) ddv = _commonUtils.FormatSql("{0}", new DateTime(0001, 1, 1));
|
||
}
|
||
return ddv;
|
||
}
|
||
}
|
||
} |